Vulnerability CVE-2023-52469
Published: 2024-02-26

Description:
In the Linux kernel, the following vulnerability has been resolved:

drivers/amd/pm: fix a use-after-free in kv_parse_power_table

When ps allocated by kzalloc equals to NULL, kv_parse_power_table
frees adev->pm.dpm.ps that allocated before. However, after the control
flow goes through the following call chains:

kv_parse_power_table
|-> kv_dpm_init
|-> kv_dpm_sw_init
|-> kv_dpm_fini

The adev->pm.dpm.ps is used in the for loop of kv_dpm_fini after its
first free in kv_parse_power_table and causes a use-after-free bug.

 References:
https://git.kernel.org/stable/c/8a27d9d9fc9b5564b8904c3a77a7dea482bfa34e
https://git.kernel.org/stable/c/8b55b06e737feb2a645b0293ea27e38418876d63
https://git.kernel.org/stable/c/520e213a0b97b64735a13950e9371e0a5d7a5dc3
https://git.kernel.org/stable/c/b6dcba02ee178282e0d28684d241e0b8462dea6a
https://git.kernel.org/stable/c/35fa2394d26e919f63600ce631e6aefc95ec2706
https://git.kernel.org/stable/c/95084632a65d5c0d682a83b55935560bdcd2a1e3
https://git.kernel.org/stable/c/3426f059eacc33ecc676b0d66539297e1cfafd02
https://git.kernel.org/stable/c/28dd788382c43b330480f57cd34cde0840896743
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